Motor base



May 12, 1936. A. w. MALL I 2,040,662

, MOTOR BASE Filed April 25. `1935 2 Sheets-Sheet l INVENTOR. ddh@ @im 777m@ ATTORNEY.

A. W. MALL MOTOR BASE May 12, 1936.

2 Sheets-Sheet 2 Filed April 25, 1935 INVENTOR. [d/am WM M I ATTORNEY.

Patented f'May 12, 1936 UNITED STATES Pii'rENTy ori-lcs 2,040,662 Moron BASE Arthur William Mali, Chicago, Ill. Application April 25, 1935, seriali No. 18,270

l 'z claims. (01.248-23) My invention relates to improvements in engine construction and more particularly to improvements in bases therefor.

My invention relates further to improvements in engine or motor bases for portable motors and like devices.

. The principal object of the present invention is to provide an improved construction in a base for a portable gasoline motor.

1o A further object of the invention is to provide an improved base of the type described, so constructed that the motor may be rotatably mounted thereon so that it can be swung around through an are of 360 degrees.

A further object of the invention is to provide an improved motor base capable of rotation upon a supporting base and capable of supporting thereon bearings for countershafts or similar devices.

A further object of the present invention is to provide an improved base of the type described capable of acting as a reservoir for the oil in the motor or engine mounted thereon.

A further object of the invention is to provide an improved base of the type described so constructed that the base, the countershaft bearing and oil reservoir are provided in a single casting.

Other objects and advantages will be more apparent from the following description wherein reference is had to the accompanying two sheets of drawings upon which:

Fig. 1 is a side elevational view of a portable gasoline motor showing my improved motor base mounted upon a supporting base;

Fig. 2 is aside elevational view of the motor base Fig. 3 is a side elevational view showing the gasoline motor assembly, the motor base, the pedestal upon which the motor swivels, and the supporting base;

Fig. 4 is a plan view of the motor base casting; and A Fig. 5 is a front elevational view thereof.

In the embodiment. of my invention which I Y have chosen to illustrate, I have shown a 3 H. P.

portable gasoline motor I0 of any usual type provided with the crank case housing l2, c ylinders I4 and drive shaft I6. A suitable gasoline tank I8 may also be provided, supported from the crank case housing I2 upon a. supporting bracket 20.

26. An endless belt 28 maybe trained over puloil for the operating parts of the placed therein. A suitable filling opening '66 is vries at its outer end the bracket 26.

leys 22 and 21 to provide a driving connection therebetween.

The crank case I2 may be provided with a iiange 30 adjacent the base thereof, which flange is adapted to rest upon the upper surface 32 5 of the motor base casting 34 which forms the subject matter of this invention. The motor base 34 is provided with the screw-threaded openings 36 which are adapted to receive bolt members 38 that pass through suitable openings in the 10 flange 30 to securely fasten the crank case and the base casting together. A gasket to make the connection oil-tight may be fastened therebetween.

The base castingr which I have provided is 15 formed with a vertical bearing portion 40 through which the bolt member 42 is adapted to pass.

'The bolt member 42 ,may also extend through l a pedestal member 44 secured to a circular supporting base 46. The bolt 'member 4 2 is pro- 20 vided with screw-threads at its upper end to receive alocking nut 48 and with a similar screwthreaded portion 50 at its lower end to receive a locking nut 52.

A suitable steel or bronze thrust washer 54 is 25 provided between the lower wall of base casting 34 and the upper wall of the pedestal 44. When the motor base, pedestal and supporting base have thus been fastened together, the motor will be capable of rotary movement upon the 30 stationary supporting base 46.

The base casting 34, as previously mentioned, is in the form of a box-like structure having -the lower Wall 56 and the vertical side walls 58,

60, 62 and 64, thus forming, when the crank case 35 is mounted thereon, an enclosure so that the otor may be provided at one end of the casting within which I a plug member 68 may be mounted during use. 40

Means for draining the oil from the reservoir in this casting are also provided and comprise the outlet opening 10 normally closed by the plug member 12. f

The base casting 34 may also be formed with 45 an extension 'I6 capable of forming a journal for a shaft 'Il which extends therethrough and car- This is` desirable in view of the fact that with the construction shown the necessity of fastening sup- '50 porting brackets for the countershaft to the crank case or to the motor base is eliminated.

I provide a means for adjusting the position of shaft 24 and bracket 26 to secure the desired tension upon the endless chain 28. In conneci 6b tion therewith, I provide an arm 80 extending laterally from the side of bracket 26. A bolt member 82 may extend therethrough and engage against a flat portion 84 formed in the extension 16 from the motor base 34. Suitable lock nuts k88 position th bracket 26 and shaft 24 in a desired position. Y

From `the foregoing description, it is believed to be apparent thatvby the use of the improved base casting which I have provided, the construction of., a. motor and supporting base of the type described .has been greatly simplified. With the construction as shown, the motor is free to be rotated to any desired position, yet at the same time the entire assembly is well supported upon a fixed base.

A further advantage of my improved' construction lies in the fact that the motor base is capable of acting as an oil reservoir for the crank case and no leakage of oil is possible therefrom.

The advantagev of utilizing a one-piece casting for all the purposes described serves to simplify and cheapen the cost of devices of this type.

While I have illustrated and described aspecic embodiment of my invention, it will be understood that changes and'modications may be made in the exact details shown, and I do not wish to be limited in any particular. Rather, what I desire to secure and protect by Letters Patent of the United States is:

1. Apparatus of the class described comprising a portable gasoline engine having an open-ended crank-case, an open-ended .motor base adapted to be fastened under said crank-case, said motor base having an oil reservoir therein, a vertical journal mounted in the bottom wall of said motor base, a stationary support base and means connecting said motor base and saidsupport base whereby said motor base may be rotated thereon, said means including a swivel member connecting said support base and said motorbase and extended through said vertical journal.

2. Apparatus of the class described comprising a supporting base in the shape of an inverted cylindrical pan, a pedestal member secured thereto axially thereof, a gasoline motor mounted upon said pedestal, said gasoline motor having a crank-case with a lower open end, a base member having an upper open end, said base member and said crank-case secured together to forman oil reservoir therein, a vertical bearing centrally disposed in said base housing andexspindle in said base so that said motor assembly tending upwardly from the bottom thereof, a spindle therein supported by said pedestal, and

. means for fastening said spindle in said base so that said motor assembly may be swiveled u pon said spindle. 5

e to form an oil reservoir therein, a. bearing for la countershaft formed integral with said base l5 member, a vertical bearing centrally disposed in said base housing and extending upwardly from the bottom thereof, a spindle therein supported by said pedestal, and means for fastening said 20 may be swiveled upon said spindle.'

4. A base of the character described having a box-like reservoir vwith an open upper end, a vertical bearing located centrally thereof, a flat upper surface on said base and means for se- 25 curing the same to a casting mounted thereon.

5. A base of the character described having av rectangularly shaped reservoir with an open upper end, a vertical bearing located centrally thereof, oil inlet and drain plugs in said reservoir, a at upper surface on A-said base-and means for securing the same to a casting mounted thereon.`

6. A base of the character described having a box-like. reservoir with an open upper end, a vertical vbearing located centrally thereof, a flat upper surface on said base, means for securing the same to a crank-case mounted thereon and a bracket formed integral with said casting and extending at right angles thereto adjacent one end thereof. i 7. A base of the character described having a rectangularly shaped reservoir with an open upper end, a vertical bearing located centrally thereof, said bearing having an opening therethrough, a nat upper surface on the side walls of said reservoir, means for securing said base to a casting mounted thereon and a. bracket formed integral with said casting and extending at right angles thereto adjacent one end 50 thereof. y

. ARTHUR WILLIAM MALL. 

